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Electrophotography > Diagnostics > Power Supply

Power Supply

Power Supply patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

05/15/14 - 20140133874 - Protection device, image forming apparatus and method, and non-transitory computer readable medium
A protection device includes a pair of electrodes and an output unit. In the pair of electrodes, one electrode, connected to a connection line that connects a load and a power supply that supplies voltage to the load, performs discharge toward the other electrode in response to application, to one...

12/05/13 - 20130322898 - Power supply apparatus for safety load shutdown and image forming apparatus including the same
When a detection signal indicates that a switch has switched off, a first relay cuts off the supply of alternating current from a commercial alternating-current source to a third DC power source and terminates a first load such as a motor and a high-voltage power source. When the detection signal...

05/30/13 - 20130136467 - Heating device and image forming apparatus
A heating device including: a heat generating unit configured to receive an AC voltage from a power supply; a zero-crossing signal generating unit configured to generate a zero-crossing signal which is a square pulse signal synchronizing with a zero-crossing timing of the AC voltage, the zero-crossing signal being a first...

05/23/13 - 20130129367 - Switching-mode power supply (smps) having overvoltage cutoff function, and method of cutting off overvoltage and image forming apparatus using the smps
A switching-mode power supply (SMPS) for an image forming apparatus which may prevent an overvoltage supplied to the SMPS, and damage to circuits in the SMPS in the image forming apparatus. The SMPS includes a rectifying circuit to rectify an alternating-current (AC) voltage input from an external power supply source...

11/08/12 - 20120281995 - Methods and apparatus for adjusting printing device power consumption based on usage data
Methods and apparatus for adjusting printing device power consumption based on previously acquired usage data. The printing device has multiple energy consumption states including at least a ready state in which the printing device is ready to commence processing of a print job immediately upon receipt and including at least...

12/01/11 - 20110293298 - Image forming apparatus and maintenance control method for the same
An image forming apparatus according to an embodiment includes a solar panel, an electric storage unit which is supplied with electric power from the solar panel and a commercial power supply and stores electricity, a power supply disconnection detecting unit which detects power supply disconnection from the commercial power supply,...

11/17/11 - 20110280597 - Voltage detection device and image heating device
The voltage detection device includes a first voltage detection part for detecting whether or not a time period ratio during which a voltage of an AC power supply is equal to or larger than a first threshold value is equal to or larger than a first ratio and a second...

11/10/11 - 20110274450 - Image forming apparatus capable of detecting contact fusion, and relay control apparatus
An image forming apparatus which can individually detect contact fusion of relays in a circuit configuration in which the relays are connected to respective both ends of a fixing heater. A first relay and a second relay are each connected between a power source and the fixing heater. The presence...

09/01/11 - 20110211851 - Electric power control apparatus and electric power control system
An electric power control apparatus sets a first period for performing electric power control and an overall target amount of power consumption to be consumed by all of the plurality of information processing apparatuses during the first period, calculates an individual target amount of power consumption to be consumed by...

07/28/11 - 20110182597 - Methods and apparatus for adjusting printing device power consumption based on usage data
Methods and apparatus for adjusting printing device power consumption based on previously acquired usage data. The printing device has multiple energy consumption states including at least a ready state in which the printing device is ready to commence processing of a print job immediately upon receipt and including at least...

07/14/11 - 20110170885 - Power supply and image forming device having the same
A power supply, which outputs a plurality of voltages in order to improve the cross regulation between output voltages and at the same time reduce the amount of electric power consumed, and an image forming device having the same are disclosed. The power supply includes a power converter, which generates...

05/26/11 - 20110123208 - Heating device and image forming apparatus
A heating device includes: a heat generating unit generating heat in response to energization of an alternating-current power supply; a zero-crossing signal generating circuit generating a zero-crossing signal in synchronization with a zero-crossing time of the alternating-current power supply; an energization regulating unit regulating an energization period of the heat...

03/31/11 - 20110076038 - Power saving processing apparatus, image forming apparatus, and computer readable medium
A power saving processing apparatus that includes a processing unit, an output unit and a transition unit is provided. The processing unit is configured to transition from a first state where power is supplied to a second state where power supply is restricted, executes a first process required for such...

03/17/11 - 20110064431 - Image forming apparatus and method of monitoring image forming apparatus power consumption
An image forming apparatus and a method of monitoring power consumption of the image forming apparatus are provided. For each one of parts of the image forming apparatus selected for monitoring, part-specific power consumption information is obtained based on accumulated operation amount information. The obtained part-specific power consumption information is...

02/17/11 - 20110038645 - Constant current-type high-voltage power supply apparatus and method of controlling power output from the same
A constant current-type high-voltage power supply apparatus which is used in an image forming apparatus includes a leakage current detection unit that detects a leakage current leaked from at least one output terminal of the constant current-type high-voltage power supply apparatus and outputs the detected leakage current, a direct current...

02/03/11 - 20110026949 - Image forming apparatus and method for testing the same
An image forming apparatus includes: an attachment unit configured to receive at least one voltage and being replaceable with a test tool, a controller for controlling operation of a plurality of voltage generating circuits, a current detecting section and a deciding section. The controller is configured to control a first...

01/20/11 - 20110013918 - Method and apparatus to control electronic power of coil which performs induction heating in imaging apparatus
Provided is a method of controlling electric power of a coil which performs induction heating in an imaging apparatus. The method includes: detecting an input current of the coil; detecting a resonant current of the coil; calculating a difference between the detected resonant current and the detected input current; and...

07/01/10 - 20100166442 - Image output apparatus
An image output apparatus, which outputs an image on a recording medium, and which is activated in an activation mode including a first activation mode and a second activation mode that consumes less power than the first activation mode, the image output apparatus including: a switching unit that selects one...

05/20/10 - 20100124425 - Image forming apparatus and control method therefor
An image forming apparatus that is capable of preventing an abnormal operation due to a voltage drop of a commercial power source and continuing an image forming operation efficiently even if the voltage drop occurs. A fixing unit fixes a toner image transferred onto a sheet. A voltage detection unit...

08/27/09 - 20090214235 - Image forming apparatus
An image forming apparatus includes; a main body; a detachable member; a cover; a displacement member movable between a preventing position and a permitting position; a one-way link mechanism provided for displacing the displacement member from the preventing position to the permitting position when the cover is opened from a...

06/04/09 - 20090142081 - High power supply to control an abnormal load
A high power supply to control an abnormal load includes a high voltage power processor to amplify a supplied DC power and to output the amplified DC power, a trans/rectifier to transform the DC power to a high voltage power and to rectify the high voltage power, a load detector...

04/02/09 - 20090087201 - Image recording apparatus
An image recording apparatus having a both-side printing function for ejecting ink to record images on a first face and a second face of a recording medium is provided. The image recording apparatus includes: a conveying unit which conveys the recording medium; a driving unit which drives the conveying unit;...

03/05/09 - 20090060537 - Image forming apparatus
An image forming apparatus includes an image forming unit for forming an image using a consumable supply; a cover attached to the image forming unit; an energy accumulation unit for accumulating energy when the cover is closed; an energy initializing unit for initializing a level of the energy accumulated in...